You can reverse any changes you've made to the Ribbon in the UI Designer by selecting the default ribbon.
With a session open in Reflection, from the Quick Access Toolbar, click .
Under User Interface, click Manage Ribbon.
Click Select another Ribbon file.
Click Built-in and select a Ribbon from the list that best matches your session document.
Click OK.
To save the session document, on the Quick Access Toolbar, click .
The session will use the Ribbon you selected until you select a different Ribbon.